# [R] expressions on graphs

Paul Murrell p.murrell at auckland.ac.nz
Wed Apr 10 00:18:05 CEST 2002

Hi

> I am trying to get a time derivative on a plot title.  I prefer to have
> it in the form \dot{s_i}, but \partial s_i/\partial t would be O.K.  In
> the graphics demo I cannot find either a dot or a partial equivalent.

Ben Bolker has submitted a patch to allow plotmath expressions of the form
...

dot(x)

... but it needs a bit more fine-tuning.  For example, producing something
along the lines of dot(s[i]) puts the dot a bit too close to the expression
I think.  If you are able to (re)compile R, I could send you a patched file
that would let you use what we currently have.  I'd be interested in your
comments on the "look" of what we've got -- if you can't use a patched file
yourself, could I send you some sample postscript output for you to look at?

Paul